Please apologise, I haven't noticed your question on TrackMe earlier.
Have you made any progress?
TrackMe is pretty straightforward, so it is unlikely that it cannot proceed to the discovery of the data sources, hosts and other types of obects being tracked.
I will think in writting a trouble shooting doc in the official documentation.
At the root of TrackMe, there are "trackers", which are scheduled reports designed to be tackling the data discovery and the maintenance of the various KVstore collections.
Focussing on data sources, you would first look at the reports named:
TrackMe - Data sources availability short term tracker
The first part of the search would allow to see easily the data being found:
| savedsearch "TrackMe - Data sources abstract root tracker"
You haven't shared much details such as screenshots, please do so or contact me on Slack if you are still blocked.